demos/sub-attaq/boat.cpp

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  41
  42 //Own
  43 #include "boat.h"
  44 #include "boat_p.h"
  45 #include "bomb.h"
  46 #include "pixmapitem.h"
  47 #include "graphicsscene.h"
  48 #include "animationmanager.h"
  49 #include "custompropertyanimation.h"
  50 #include "qanimationstate.h"
  51
  52 //Qt
  53 #include <QtCore/QPropertyAnimation>
  54 #include <QtCore/QStateMachine>
  55 #include <QtCore/QHistoryState>
  56 #include <QtCore/QFinalState>
  57 #include <QtCore/QState>
  58 #include <QtCore/QSequentialAnimationGroup>
  59
  60 static QAbstractAnimation *setupDestroyAnimation(Boat *boat)
  61 {
  62     QSequentialAnimationGroup *group = new QSequentialAnimationGroup(boat);
  63 #if QT_VERSION >=0x040500
  64     PixmapItem *step1 = new PixmapItem(QString("explosion/boat/step1"),GraphicsScene::Big, boat);
  65     step1->setZValue(6);
  66     PixmapItem *step2 = new PixmapItem(QString("explosion/boat/step2"),GraphicsScene::Big, boat);
  67     step2->setZValue(6);
  68     PixmapItem *step3 = new PixmapItem(QString("explosion/boat/step3"),GraphicsScene::Big, boat);
  69     step3->setZValue(6);
  70     PixmapItem *step4 = new PixmapItem(QString("explosion/boat/step4"),GraphicsScene::Big, boat);
  71     step4->setZValue(6);
  72     step1->setOpacity(0);
  73     step2->setOpacity(0);
  74     step3->setOpacity(0);
  75     step4->setOpacity(0);
  76     CustomPropertyAnimation *anim1 = new CustomPropertyAnimation(boat);
  77     anim1->setMemberFunctions((QGraphicsItem*)step1, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  78     anim1->setDuration(100);
  79     anim1->setEndValue(1);
  80     CustomPropertyAnimation *anim2 = new CustomPropertyAnimation(boat);
  81     anim2->setMemberFunctions((QGraphicsItem*)step2, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  82     anim2->setDuration(100);
  83     anim2->setEndValue(1);
  84     CustomPropertyAnimation *anim3 = new CustomPropertyAnimation(boat);
  85     anim3->setMemberFunctions((QGraphicsItem*)step3, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  86     anim3->setDuration(100);
  87     anim3->setEndValue(1);
  88     CustomPropertyAnimation *anim4 = new CustomPropertyAnimation(boat);
  89     anim4->setMemberFunctions((QGraphicsItem*)step4, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  90     anim4->setDuration(100);
  91     anim4->setEndValue(1);
  92     CustomPropertyAnimation *anim5 = new CustomPropertyAnimation(boat);
  93     anim5->setMemberFunctions((QGraphicsItem*)step1, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  94     anim5->setDuration(100);
  95     anim5->setEndValue(0);
  96     CustomPropertyAnimation *anim6 = new CustomPropertyAnimation(boat);
  97     anim6->setMemberFunctions((QGraphicsItem*)step2, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
  98     anim6->setDuration(100);
  99     anim6->setEndValue(0);
 100     CustomPropertyAnimation *anim7 = new CustomPropertyAnimation(boat);
 101     anim7->setMemberFunctions((QGraphicsItem*)step3, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
 102     anim7->setDuration(100);
 103     anim7->setEndValue(0);
 104     CustomPropertyAnimation *anim8 = new CustomPropertyAnimation(boat);
 105     anim8->setMemberFunctions((QGraphicsItem*)step4, &QGraphicsItem::opacity, &QGraphicsItem::setOpacity);
 106     anim8->setDuration(100);
 107     anim8->setEndValue(0);
 108     group->addAnimation(anim1);
 109     group->addAnimation(anim2);
 110     group->addAnimation(anim3);
 111     group->addAnimation(anim4);
 112     group->addAnimation(anim5);
 113     group->addAnimation(anim6);
 114     group->addAnimation(anim7);
 115     group->addAnimation(anim8);
 116 #else
 117     // work around for a bug where we don't transition if the duration is zero.
 118     QtPauseAnimation *anim = new QtPauseAnimation(group);
 119     anim->setDuration(1);
 120     group->addAnimation(anim);
 121 #endif
 122     AnimationManager::self()->registerAnimation(group);
 123     return group;
 124 }
 125
 126
 127
 128 Boat::Boat(QGraphicsItem * parent, Qt::WindowFlags wFlags)
 129     : QGraphicsWidget(parent,wFlags), speed(0), bombsAlreadyLaunched(0), direction(Boat::None), movementAnimation(0)
 130 {
 131     pixmapItem = new PixmapItem(QString("boat"),GraphicsScene::Big, this);
 132     setZValue(4);
 133     setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
 134     setFlags(QGraphicsItem::ItemIsMovable |  QGraphicsItem::ItemIsFocusable);
 135     resize(pixmapItem->boundingRect().size());
 136
 137     //The movement animation used to animate the boat
 138     movementAnimation = new QPropertyAnimation(this, "pos");
 139
 140     //The movement animation used to animate the boat
 141     destroyAnimation = setupDestroyAnimation(this);
 142
 143     //We setup the state machien of the boat
 144     machine = new QStateMachine(this);
 145     QState *moving = new QState(machine);
 146     StopState *stopState = new StopState(this, moving);
 147     machine->setInitialState(moving);
 148     moving->setInitialState(stopState);
 149     MoveStateRight *moveStateRight = new MoveStateRight(this, moving);
 150     MoveStateLeft *moveStateLeft = new MoveStateLeft(this, moving);
 151     LaunchStateRight *launchStateRight = new LaunchStateRight(this, machine);
 152     LaunchStateLeft *launchStateLeft = new LaunchStateLeft(this, machine);
 153
 154     //then setup the transitions for the rightMove state
 155     KeyStopTransition *leftStopRight = new KeyStopTransition(this, QEvent::KeyPress, Qt::Key_Left);
 156     leftStopRight->setTargetState(stopState);
 157     KeyMoveTransition *leftMoveRight = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Left);
 158     leftMoveRight->setTargetState(moveStateRight);
 159     KeyMoveTransition *rightMoveRight = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Right);
 160     rightMoveRight->setTargetState(moveStateRight);
 161     KeyMoveTransition *rightMoveStop = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Right);
 162     rightMoveStop->setTargetState(moveStateRight);
 163
 164     //then setup the transitions for the leftMove state
 165     KeyStopTransition *rightStopLeft = new KeyStopTransition(this, QEvent::KeyPress, Qt::Key_Right);
 166     rightStopLeft->setTargetState(stopState);
 167     KeyMoveTransition *rightMoveLeft = new KeyMoveTransition(this, QEvent::KeyPress, Qt::Key_Right);
 168     rightMoveLeft->setTargetState(moveStateLeft);
 169     KeyMoveTransition *leftMoveLeft = new KeyMoveTransition(this, QEvent::KeyPress,Qt::Key_Left);
 170     leftMoveLeft->setTargetState(moveStateLeft);
 171     KeyMoveTransition *leftMoveStop = new KeyMoveTransition(this, QEvent::KeyPress,Qt::Key_Left);
 172     leftMoveStop->setTargetState(moveStateLeft);
 173
 174     //We set up the right move state
 175     moveStateRight->addTransition(leftStopRight);
 176     moveStateRight->addTransition(leftMoveRight);
 177     moveStateRight->addTransition(rightMoveRight);
 178     stopState->addTransition(rightMoveStop);
 179
 180     //We set up the left move state
 181     moveStateLeft->addTransition(rightStopLeft);
 182     moveStateLeft->addTransition(leftMoveLeft);
 183     moveStateLeft->addTransition(rightMoveLeft);
 184     stopState->addTransition(leftMoveStop);
 185
 186     //The animation is finished, it means we reached the border of the screen, the boat is stopped so we move to the stop state
 187     moveStateLeft->addTransition(movementAnimation, SIGNAL(finished()), stopState);
 188     moveStateRight->addTransition(movementAnimation, SIGNAL(finished()), stopState);
 189
 190     //We set up the keys for dropping bombs
 191     KeyLaunchTransition *upFireLeft = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Up);
 192     upFireLeft->setTargetState(launchStateRight);
 193     KeyLaunchTransition *upFireRight = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Up);
 194     upFireRight->setTargetState(launchStateRight);
 195     KeyLaunchTransition *upFireStop = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Up);
 196     upFireStop->setTargetState(launchStateRight);
 197     KeyLaunchTransition *downFireLeft = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Down);
 198     downFireLeft->setTargetState(launchStateLeft);
 199     KeyLaunchTransition *downFireRight = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Down);
 200     downFireRight->setTargetState(launchStateLeft);
 201     KeyLaunchTransition *downFireMove = new KeyLaunchTransition(this, QEvent::KeyPress, Qt::Key_Down);
 202     downFireMove->setTargetState(launchStateLeft);
 203
 204     //We set up transitions for fire up
 205     moveStateRight->addTransition(upFireRight);
 206     moveStateLeft->addTransition(upFireLeft);
 207     stopState->addTransition(upFireStop);
 208
 209     //We set up transitions for fire down
 210     moveStateRight->addTransition(downFireRight);
 211     moveStateLeft->addTransition(downFireLeft);
 212     stopState->addTransition(downFireMove);
 213
 214     //Finally the launch state should come back to its original state
 215     QHistoryState *historyState = new QHistoryState(moving);
 216     launchStateLeft->addTransition(historyState);
 217     launchStateRight->addTransition(historyState);
 218
 219     QFinalState *final = new QFinalState(machine);
 220
 221     //This state play the destroyed animation
 222     QAnimationState *destroyedState = new QAnimationState(machine);
 223     destroyedState->setAnimation(destroyAnimation);
 224
 225     //Play a nice animation when the boat is destroyed
 226     moving->addTransition(this, SIGNAL(boatDestroyed()),destroyedState);
 227
 228     //Transition to final state when the destroyed animation is finished
 229     destroyedState->addTransition(destroyedState, SIGNAL(animationFinished()), final);
 230
 231     //The machine has finished to be executed, then the boat is dead
 232     connect(machine,SIGNAL(finished()),this, SIGNAL(boatExecutionFinished()));
 233
 234 }
 235
 236 void Boat::run()
 237 {
 238     //We register animations
 239     AnimationManager::self()->registerAnimation(movementAnimation);
 240     AnimationManager::self()->registerAnimation(destroyAnimation);
 241     machine->start();
 242 }
 243
 244 void Boat::stop()
 245 {
 246     movementAnimation->stop();
 247     machine->stop();
 248 }
 249
 250 void Boat::updateBoatMovement()
 251 {
 252     if (speed == 0 || direction == Boat::None) {
 253         movementAnimation->stop();
 254         return;
 255     }
 256
 257     movementAnimation->stop();
 258     movementAnimation->setStartValue(pos());
 259
 260     if (direction == Boat::Left) {
 261         movementAnimation->setEndValue(QPointF(0,y()));
 262         movementAnimation->setDuration(x()/speed*15);
 263     }
 264     else /*if (direction == Boat::Right)*/ {
 265         movementAnimation->setEndValue(QPointF(scene()->width()-size().width(),y()));
 266         movementAnimation->setDuration((scene()->width()-size().width()-x())/speed*15);
 267     }
 268     movementAnimation->start();
 269 }
 270
 271 void Boat::destroy()
 272 {
 273     movementAnimation->stop();
 274     emit boatDestroyed();
 275 }
 276
 277 int Boat::bombsLaunched() const
 278 {
 279     return bombsAlreadyLaunched;
 280 }
 281
 282 void Boat::setBombsLaunched(int number)
 283 {
 284     if (number > MAX_BOMB) {
 285         qWarning("Boat::setBombsLaunched : It impossible to launch that number of bombs");
 286         return;
 287     }
 288     bombsAlreadyLaunched = number;
 289 }
 290
 291 int Boat::currentSpeed() const
 292 {
 293     return speed;
 294 }
 295
 296 void Boat::setCurrentSpeed(int speed)
 297 {
 298     if (speed > 3 || speed < 0) {
 299         qWarning("Boat::setCurrentSpeed: The boat can't run on that speed");
 300         return;
 301     }
 302     this->speed = speed;
 303 }
 304
 305 enum Boat::Movement Boat::currentDirection() const
 306 {
 307     return direction;
 308 }
 309
 310 void Boat::setCurrentDirection(Movement direction)
 311 {
 312     this->direction = direction;
 313 }
 314
 315 int Boat::type() const
 316 {
 317     return Type;
 318 }